package com.heima.search.service.impl;

import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.search.dtos.HistorySearchDto;
import com.heima.model.user.pojos.ApUser;
import com.heima.search.pojo.ApUserSearch;
import com.heima.search.service.ApUserSearchService;
import com.heima.utils.thread.AppThreadLocalUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Sort;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;

import java.util.Date;
import java.util.List;

@Service
@Slf4j
public class ApUserSearchServiceImpl implements ApUserSearchService {

    @Autowired
    private MongoTemplate mongoTemplate;

    /**
     * 保存用户搜索历史
     * @param keyword
     * @param userId
     */
    @Async
    @Override
    public void insert(String keyword, Integer userId) {

        //1.按照用户和关键字查询
        ApUserSearch apUserSearch = mongoTemplate.findOne(Query.query(Criteria.where("userId").is(userId).and("keyword").is(keyword)), ApUserSearch.class);

        //2.存在，更新用户的搜索历史  创建时间
        if(apUserSearch != null){
            apUserSearch.setCreatedTime(new Date());
            mongoTemplate.save(apUserSearch);
            return;
        }

        apUserSearch = new ApUserSearch();
        apUserSearch.setUserId(userId);
        apUserSearch.setKeyword(keyword);
        apUserSearch.setCreatedTime(new Date());

        //3.不存在，判断当前用户的记录数是否超过了10
        List<ApUserSearch> apUserSearchList = mongoTemplate.find(Query.query(Criteria.where("userId").is(userId)).with(Sort.by(Sort.Direction.DESC, "createdTime")), ApUserSearch.class);
        if(apUserSearchList == null || apUserSearchList.size() < 10){
            //保存记录
            mongoTemplate.save(apUserSearch);
        }else {
            //替换
            ApUserSearch lastUserSearch = apUserSearchList.get(apUserSearchList.size() - 1);
            mongoTemplate.findAndReplace(Query.query(Criteria.where("id").is(lastUserSearch.getId())),apUserSearch);
        }

    }

    /**
     * 查询用户搜索历史列表
     * @return
     */
    @Override
    public ResponseResult findUserSearch() {
        //获取用户
        ApUser user = AppThreadLocalUtil.getUser();
        if(user == null){
            return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
        }

        //按照用户查询，时间倒序
        List<ApUserSearch> apUserSearchList = mongoTemplate.find(Query.query(Criteria.where("userId").is(user.getId())).with(Sort.by(Sort.Direction.DESC, "createdTime")), ApUserSearch.class);
        return ResponseResult.okResult(apUserSearchList);
    }

    /**
     * 删除搜索历史
     * @param dto
     * @return
     */
    @Override
    public ResponseResult delUserSearch(HistorySearchDto dto) {
        //校验参数
        if(StringUtils.isBlank(dto.getId())){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }

        //获取用户
        ApUser user = AppThreadLocalUtil.getUser();
        if(user == null){
            return ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
        }

        //删除
        mongoTemplate.remove(Query.query(Criteria.where("userId").is(user.getId()).and("id").is(dto.getId())),ApUserSearch.class);
        return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
    }
}
